EP0584447A1 - Dispositif de mesure de courant pour câble - Google Patents

Dispositif de mesure de courant pour câble Download PDF

Info

Publication number
EP0584447A1
EP0584447A1 EP93103817A EP93103817A EP0584447A1 EP 0584447 A1 EP0584447 A1 EP 0584447A1 EP 93103817 A EP93103817 A EP 93103817A EP 93103817 A EP93103817 A EP 93103817A EP 0584447 A1 EP0584447 A1 EP 0584447A1
Authority
EP
European Patent Office
Prior art keywords
current
measuring arrangement
cable
faraday
arrangement according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93103817A
Other languages
German (de)
English (en)
Other versions
EP0584447B1 (fr
Inventor
Bernd Dr. Ing. Harjes
Hartwig Dipl.-Ing. Senftleben
Dirk Prof. Dr. Ing. Peier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Felten and Guilleaume Energietechnik AG
Original Assignee
Felten and Guilleaume Energietechnik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Felten and Guilleaume Energietechnik AG filed Critical Felten and Guilleaume Energietechnik AG
Publication of EP0584447A1 publication Critical patent/EP0584447A1/fr
Application granted granted Critical
Publication of EP0584447B1 publication Critical patent/EP0584447B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G01R15/245—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect
    • G01R15/246—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect based on the Faraday, i.e. linear magneto-optic, effect
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured

Definitions

  • the invention relates to a current measuring arrangement for a one-sided feed section of an energy core of an energy cable with at least two polarization-maintaining optical fibers, which are designed as Faraday coils and with devices at one end of the section for coupling and decoupling light and with a device for evaluating optical Signals.
  • the invention is based on the object of specifying a current measuring arrangement of the type mentioned at the outset which makes it possible to ascertain more precise data about the fault current and in particular also about the fault current location of an energy path fed on one side.
  • the invention realizes a combination of a concentrated and a distributed optical fiber coil in an energy line, both of which are individually controlled from the outside, where their measured values are evaluated.
  • a concentrated current sensor is understood to be a tightly wound optical fiber coil and a distributed current sensor is an optical fiber coil with a long stroke, with each of which the current intensity in an electrical Conductor is measurable due to the Faraday effect.
  • the optical fiber coils described in this way are referred to below as Faraday coils. Due to the Faraday effect, the magnetic field of the energy wires (or the cable shield) produces a rotation of the plane of polarization of the light radiated into the optical waveguide (generally in the infrared wavelength range).
  • the optical fibers of the current sensors are led out of the power line (for example cables) receiving the conductor and provided with devices to couple the optical signals in and out.
  • the decoupled signals are fed to an evaluation device (e.g. in a control room). It is known to integrate optical fibers not only in cables but also in sleeves or terminations, so that already in the Manufacture of the cables, sleeves and terminations the prerequisite for an integrated current measuring arrangement can be created.
  • optical fibers are used in which the polarization state of the guided light wave is not influenced by interference.
  • optical fibers are special optical fibers ("spun high birefringence" in the article by R.I. Laming and D.N. Payne in IEEC J Lightwave Techn 7: 1989: 2084) or optical fibers prepared by twisting ordinary monomode fibers (DE 2835794).
  • optical waveguides that do not influence the polarization state of the optical wave will be referred to as polarization-maintaining optical waveguides.
  • At least one optical waveguide is designed as a mechanically twisted single-mode optical waveguide (DE 28 35 794).
  • the optical waveguides are integrated over a longer distance, preferably in the area of the cable shield, in order to implement the distributed current sensor in the cable.
  • optical waveguide in the form of a helical spring around a supporting fiber and to fix it against turning back. Details of the winding of the optical waveguide are described in the dissertation by Holger Hirsch, University of Dortmund 1991. This type of optical waveguide is simple to manufacture and therefore less expensive than optical waveguides, to which the property of maintaining polarization in the drawing process must be impressed.
  • the support fiber can itself be an optical waveguide, so that it can be used as an information-carrying optical waveguide in the current measuring arrangement. This has another advantage because the support fiber can be used functionally in the measuring system. During the wind around each other, both optical fibers twist around each other with the same blow (double screw).
  • the information-carrying optical waveguide used as a supporting fiber can also be used as a sensor optical waveguide, for example for the purpose of transmitting operating states of the cable (temperatures or pressures) or as a return line for the signals of the current measuring arrangement. In this respect, a symmetrical design of both double-wound optical fibers is created, each with interchangeable stress on one or the other.
  • the second optical fiber of the double screw can also be left in reserve and only activated if necessary. Regardless of its mode of operation (sensor for operating states or current sensor), each optical fiber of the distributed current sensor can be used as a communication optical fiber.
  • the current measuring arrangement consists of 2 current sensors, one of which is a narrow and one of a wide-wound optical fiber coil.
  • the concentrated Faraday coil is located on the feed side of the cable route.
  • the current measuring arrangement is assigned to at least one energy wire in the energy cable.
  • Each Faraday coil is an operating current sensor in its own right. If both sensor signals are compared, the measured variable is zero if there are no errors in the cable section.
  • the distributed current sensor measures the fault current weighted with the distance of the fault location, based on the length of the cable route, from the beginning (infeed side) of the cable route.
  • Both current sensors are installed in a cable section defining a measuring section.
  • the ratio of the measurement signals thus provides the fault location z, or the relative distance z / L of the fault location from the beginning of the cable route, the relationship being simplified even if the same number of turns N1, N2 are provided in both Faraday coils.
  • shield power lines There are 2 types of shield power lines.
  • One form is that of the tubular form, which is characterized by a linear spread of the shield current.
  • special attention must be paid to the installation of the distributed current sensor if the shield current line is screwed in the cable.
  • the arrangement of the distributed sensor for this case must take into account that the magnetic field of the screen current acts in the longitudinal direction of the optical waveguide and thus the screen current can falsify the measurement.
  • the distributed Faraday coil is made up of two coils with a shield current lead screwed around the energy core axis.
  • An optical fiber coil is placed under the shield and counter to the shield power cable.
  • a second fiber optic coil is added, which lies in the shield parallel to the shield current line and runs back to the beginning of the cable section.
  • the end of this coil is provided with a mirror.
  • the sum of the windings of both optical fiber coils corresponds to the number of turns N2.
  • the embodiment described is independent of the order of the arrangement of the partial coils, so that the arrangement of the two partial coils can also be such that the light path first passes through an optical fiber coil in the screen and then an optical fiber coil under the screen.
  • Temperature effects in mechanically twisted optical fibers create interference on the position of the polarization plane in optical fibers, which can overlay the useful effects. It is therefore provided that a mirror for reflecting the signals at the beginning of the sensor is provided at the end of each current sensor.
  • This measure creates reciprocal effects in the optical fiber compensated. In particular, this measure simplifies the current measuring arrangement because the return of the optical signals to the coupling point makes a further decoupling point superfluous.
  • the current measuring arrangement can be operated on one side.
  • the choice of the access point to the current measuring arrangement depends on the technical circumstances. It is suggested to choose this location on the infeed side of the cable route. Regardless of the choice of the access point - a consumer (e.g. transformer) connected to the end of the cable route can be monitored together with the cable route if it is equipped with optical fibers and the optical fiber sensors of the consumer are connected to the optical fibers of the current measuring arrangement.
  • a consumer e.g. transformer
  • the invention can be used not only in single-core cables but also in multi-phase cables or cables with multi-core, the current measuring arrangement being integrated in the cable for each phase or energy core during the manufacturing process.
  • Concentrated Faraday coils are short. For economic reasons, they are not integrated in the cable, although this is technically feasible. Concentrated Faraday coils are advantageously produced as a slide-on coil and pushed and fixed over the measuring points.
  • the mirror is accommodated by means of sleeves or end closures, the design of which is familiar to the person skilled in the art.
  • a cable is used in the cable section in which the distributed Faraday coil is fully integrated.
  • the optical waveguide of the distributed current sensor can be designed as a sensor for operating states or as a communication optical waveguide on the cable route. Temperature sensors for energy paths are important as typical sensors.
  • the optical fiber introduced as a supporting fiber can be used as a sensor for operating states. It is of particular interest for the operator of an energy route to be able to detect hot spots. The monitoring of the temperature can take place intermittently or simultaneously with the current measuring process, regardless of the operation of the current measuring arrangement. Time and / or wavelength division multiplexing methods are suitable as methods.
  • temperature measurement methods based on optical backscatter effects for example Raman scattering
  • a sensor system that can be operated on one side and is adapted to the current measurement results.
  • the current measuring arrangement has the particular advantage that it can be used in distance or comparison protection devices.
  • the measuring arrangement is used as a component within a line protection and / or monitoring system.
  • Such a configuration is superior to conventional distance or comparison protection devices.
  • an evaluation station which may be a component of a network control room, for example
  • operating variable measurements are proposed in an energy path with the current measuring arrangement, in that signals from the current measuring sensors are also routed to an evaluation station and evaluated.
  • communication data can be sent via the optical fibers. In this case, everyone must The end of the current measuring arrangement of the communication optical waveguide is led out of the cable section and connected to end-of-the-line message stations.
  • the cable route is only accessed from one side.
  • the entire spectrum of measurement and evaluation signals is available at this one end for further processing of an evaluation device in a control room.
  • Known differential protection arrangements have the disadvantage that there must be connections to the cable at both ends of the cable route.
  • the current measuring arrangement eliminates the need for external measurement signal and trigger signal transmission between both ends of the cable route.
  • the protection area is 100% of the cable route. This is not achieved with conventional distance protection.
  • absolute selectivity can be achieved (ie the faulty route can be specifically switched off).
  • This property is particularly advantageous when existing power supply networks are expanded to include additional, single-sided cable routes (branch line).
  • the possibility of fault location allows a clear assignment of the fault to the existing network or to the cable in the branch line, so that the protective devices that are already in operation are not impaired in their function.
  • the current measuring arrangement is shown schematically. It consists of a concentrated Faraday current sensor and a Faraday current sensor distributed over the cable route KS , each consisting of an optical waveguide coil 42, 44 for a cable 10 .
  • the first optical fiber coil 42 consists of the optical fiber 46 and is wound on the feed side 8 of the cable section KS as a concentrated coil.
  • the optical waveguide coil 42 is implemented in a simple embodiment as a coil pushed onto the cable 10 .
  • the second optical fiber coil 44 with the optical fiber 48 is distributed with a long stroke s over the cable route KS .
  • the length of the cable route KS is L
  • the location coordinate of the fault location on the cable route KS is designated z .
  • the operating current flowing in the energy core 12 ( FIG. 3) of the cable is designated I.
  • a fault current (earth fault) is called I F.
  • the current-measuring arrangement is driven 42,44 via the light waveguide 40,48 of the control or evaluation stations 60,62 which are listed in a control room 65 are.
  • the control room 65 the measured values and physical data on the operating states of the cable route are determined and evaluated and / or communication tasks are carried out.
  • the current measuring arrangement has a very simple topological structure because of the access to the cable route that is only available at one point.
  • Both fiber optic coils 42,44 have at the end of a mirror 43.45 for reflecting the light to the start of the optical fiber coil 42,44.
  • the transition between the cable 10 and the cable in the cable section KS is made with a cable sleeve 70 .
  • the optical waveguide 48 is guided through the cable sleeve 70 (reference symbol 84 ).
  • a second sleeve 72 connects the cable from the cable route KS at point 90 to a further cable or to an end user.
  • the end of the optical waveguide coil 44 and the mirror 45 can be integrated in the sleeve 72 .
  • the installation sleeve 170 is a complete structural unit, in which the parts of the current measuring arrangement mentioned are integrated.
  • the Fig . 2 schematically shows the representation for the arrangement of the distributed Faraday coil 44 , the shield wire line 80 of which is screwed.
  • the Fig . 3 shows this in detail. As already shown in Fig . 1, there is a mirror 45 at the end of the distributed Faraday coil 44 .
  • the Faraday coil 44 lying in the cable section with a long lay is formed from two optical waveguide lines 50, 52 .
  • An optical fiber 52 is laid as a coil under the cable shield 80 in counter-strike to it.
  • the other optical waveguide 50 runs back as a second coil to the beginning of the cable section in the cable shield 80 parallel to the shield wires 82 (shown in broken lines).
  • the sum of the turns of both optical waveguide coils 50 , 52 form the relevant number of turns N2 of the concentrated current sensor 44 .
  • the magnetic field of the energy core 12 and the magnetic field of the screen current act on the optical waveguide 52 located under the screen 80 .
  • the effect of the magnetic field of the shield current line 80 is compensated for by this arrangement.
  • the order of the arrangement of both optical fibers 50, 52 is arbitrary. For the compensation effect, it is irrelevant whether the light is first in the optical fiber 52 runs under the screen to the end of the cable route KS and then in the optical fiber 50 in the screen position to the mirror 45 or whether it first runs in the optical fiber 50 in the screen position to the end of the cable route KS and then under the screen to the mirror 45 .
  • An installation sleeve 170 can be provided on the feed side 8 of the cable route.
  • the concentrated Faraday coil 42 it includes the feedthroughs of the optical waveguides to the outside and also the mirrors 43, 45 .
EP93103817A 1992-08-22 1993-03-10 Dispositif de mesure de courant pour câble Expired - Lifetime EP0584447B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4227904A DE4227904C1 (fr) 1992-08-22 1992-08-22
DE4227904 1992-08-22

Publications (2)

Publication Number Publication Date
EP0584447A1 true EP0584447A1 (fr) 1994-03-02
EP0584447B1 EP0584447B1 (fr) 1997-06-11

Family

ID=6466182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93103817A Expired - Lifetime EP0584447B1 (fr) 1992-08-22 1993-03-10 Dispositif de mesure de courant pour câble

Country Status (3)

Country Link
EP (1) EP0584447B1 (fr)
AT (1) ATE154442T1 (fr)
DE (1) DE4227904C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784893A1 (fr) * 2013-03-29 2014-10-01 Alstom Technology Ltd Protection de jeu de barres contre les défauts entre sectionneur et transformateur de courant
WO2015144199A1 (fr) 2014-03-24 2015-10-01 Prysmian S.P.A. Procédé de mesure de la distribution de courant dans câbles à haute et moyenne tension

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4433691A1 (de) * 1994-09-21 1996-03-28 Siemens Ag Verfahren zur Schaltung einer Ersatzstrecke
WO1999053627A1 (fr) 1998-04-10 1999-10-21 Chrimar Systems, Inc. Doing Business As Cms Technologies Systeme de communication avec un equipement electronique sur un reseau

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2835794A1 (de) * 1978-08-16 1980-02-28 Max Planck Gesellschaft Faseroptische anordnung zur messung der staerke eines elektrischen stromes
DE2924804A1 (de) * 1979-06-20 1981-01-15 Licentia Gmbh Verfahren zur eliminierung der temperaturabhaengigen aenderung des polarisationszustandes in einer von linear polarisiertem licht durchlaufenen tordierten lichtleitfaser
EP0108012A1 (fr) * 1982-10-28 1984-05-09 Commissariat à l'Energie Atomique Dispositif de mesure d'intensité électrique à effet Faraday
DE3615557A1 (de) * 1986-05-09 1987-11-12 Felten & Guilleaume Energie Einrichtung zur strommessung bei einem energiekabel unter einsatz von lichtwellenleitern (lwl)
EP0452218A2 (fr) * 1990-04-13 1991-10-16 Mitsubishi Denki Kabushiki Kaisha Appareil de détection de défauts dans un système de puissance

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115433A1 (de) * 1981-04-16 1982-11-11 Philips Kommunikations Industrie AG, 8500 Nürnberg "messvorrichtung zur magneto-optischen strommessung"
DE3116149A1 (de) * 1981-04-23 1982-11-11 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen Faseroptische anordnung zur messung der staerke eines elektrischen stromes i unter ausnutzung des faraday-effekts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2835794A1 (de) * 1978-08-16 1980-02-28 Max Planck Gesellschaft Faseroptische anordnung zur messung der staerke eines elektrischen stromes
DE2924804A1 (de) * 1979-06-20 1981-01-15 Licentia Gmbh Verfahren zur eliminierung der temperaturabhaengigen aenderung des polarisationszustandes in einer von linear polarisiertem licht durchlaufenen tordierten lichtleitfaser
EP0108012A1 (fr) * 1982-10-28 1984-05-09 Commissariat à l'Energie Atomique Dispositif de mesure d'intensité électrique à effet Faraday
DE3615557A1 (de) * 1986-05-09 1987-11-12 Felten & Guilleaume Energie Einrichtung zur strommessung bei einem energiekabel unter einsatz von lichtwellenleitern (lwl)
EP0452218A2 (fr) * 1990-04-13 1991-10-16 Mitsubishi Denki Kabushiki Kaisha Appareil de détection de défauts dans un système de puissance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LAMING UND PAYNE: "electric current sensors employing spun highly birefringent optical fibers", IEEC J LIGHTWAVE TECHN, vol. 7, no. 12, December 1989 (1989-12-01), pages 2084 - 2094, XP055164396, DOI: doi:10.1109/50.41634 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784893A1 (fr) * 2013-03-29 2014-10-01 Alstom Technology Ltd Protection de jeu de barres contre les défauts entre sectionneur et transformateur de courant
WO2014154791A1 (fr) * 2013-03-29 2014-10-02 Alstom Technology Ltd Protection de barre omnibus contre les défauts entre un disjoncteur et un transformateur de courant
WO2015144199A1 (fr) 2014-03-24 2015-10-01 Prysmian S.P.A. Procédé de mesure de la distribution de courant dans câbles à haute et moyenne tension
US10139433B2 (en) 2014-03-24 2018-11-27 Prysmian S.P.A. Method of measuring current distribution in high and medium voltage cables

Also Published As

Publication number Publication date
DE4227904C1 (fr) 1993-07-22
ATE154442T1 (de) 1997-06-15
EP0584447B1 (fr) 1997-06-11

Similar Documents

Publication Publication Date Title
EP0430060B1 (fr) Ampèremètre à fibre optique
EP0706661B1 (fr) Procede optique permettant de mesurer un courant alternatif electrique compense en temperature et dispositif de mise en ouvre dudit procede
DE2835794A1 (de) Faseroptische anordnung zur messung der staerke eines elektrischen stromes
DE3638583A1 (de) Verfahren und vorrichtung zur bestimmung der dispersion optischer fasern
EP0799426B1 (fr) Procede et dispositif pour mesurer un champ magnetique a l'aide de l'effet faraday avec compensation des variations d'intensite et des effets de la temperature
DE2533217B2 (de) Verfahren und Einrichtung zur Ortung eines Risses auf mindestens einer Faser eines optischen Kabels
EP0776477B1 (fr) Procede et systeme permettant de mesurer des courants electriques dans au moins deux plages de mesure
DE4312183A1 (de) Optisches Meßverfahren zum Messen eines elektrischen Wechselstromes mit Temperaturkompensation und Vorrichtung zur Durchführung des Verfahrens
DE2130046B2 (de) Einrichtung zur Messung von Spannungen an Hochspannungsleitern
DE2906870C2 (fr)
EP0584447B1 (fr) Dispositif de mesure de courant pour câble
DE2924804A1 (de) Verfahren zur eliminierung der temperaturabhaengigen aenderung des polarisationszustandes in einer von linear polarisiertem licht durchlaufenen tordierten lichtleitfaser
EP0584448B1 (fr) Dispositif de mesure de courant pour câble
EP1421393B1 (fr) Capteurs de courant optiques
EP0274791B1 (fr) Méthode pour mesurer l'accroissement spécifique de l'atténuation, dépendant de la courbure, d'un guide d'ondes lumineuses
DE3926312C2 (fr)
DE2333242C2 (de) Digitaler magnetooptischer Meßwandler für Hochspannung
EP0904550B1 (fr) Procede d'etalonnage thermique d'un dispositif optique de mesure des champs magnetiques et dispositif de mesure etalonne selon ce procede
CH686744A5 (de) Faseroptischer Stromsensor.
EP0981756B1 (fr) Generateur et methode de mesure d'une tension de generateur
DE19903447A1 (de) Sensor und Verfahren zur Erfassung von Abstandsänderungen
EP0412311A1 (fr) Gyroscope à fibre optique du type Sagnac
DE19622532A1 (de) Verfahren zum Prüfen und Kennzeichnen von Fernmeldekabelspleißstellen
EP1055127A1 (fr) Procede et dispositif pour mesurer un champ magnetique par effet faraday
DE60002436T2 (de) Polarisationswandler und stromsensor unter verwendung des selben

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE FR GB IT NL

17P Request for examination filed

Effective date: 19940107

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19961025

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE FR GB IT NL

REF Corresponds to:

Ref document number: 154442

Country of ref document: AT

Date of ref document: 19970615

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970703

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060331

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060829

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20060908

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20060911

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20060914

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20061012

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070310

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070310

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20071001

BERE Be: lapsed

Owner name: *FELTEN & GUILLEAUME A.G.

Effective date: 20070331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20071130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070310

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070402

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070310